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GB606997A - Improvements in or relating to telephone instruments - Google Patents

Improvements in or relating to telephone instruments

Info

Publication number
GB606997A
GB606997A GB220746A GB220746A GB606997A GB 606997 A GB606997 A GB 606997A GB 220746 A GB220746 A GB 220746A GB 220746 A GB220746 A GB 220746A GB 606997 A GB606997 A GB 606997A
Authority
GB
United Kingdom
Prior art keywords
telephone
casing
recess
watch
relating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB220746A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NORMAN BRIAN HOPE
PIONEER TELEPHONE Manufacturing Co
Original Assignee
NORMAN BRIAN HOPE
PIONEER TELEPHONE Manufacturing Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by NORMAN BRIAN HOPE, PIONEER TELEPHONE Manufacturing Co filed Critical NORMAN BRIAN HOPE
Priority to GB220746A priority Critical patent/GB606997A/en
Publication of GB606997A publication Critical patent/GB606997A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/02—Casings; Cabinets ; Supports therefor; Mountings therein
    • H04R1/021—Casings; Cabinets ; Supports therefor; Mountings therein incorporating only one transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Electric Clocks (AREA)

Abstract

606,997. Telephone instruments. PIONEER TELEPHONE MANUFACTURING CO., Ltd., and HOPE, N. B. Jan. 23, 1946, No. 2207. [Class 40 (iv)] A recess in the casing 10 of an instrument, such as a loud-speaking telephone, is adapted to receive in the four-pronged spring clip 13 a watch-type receiver, which acting on the spring- loaded plunger 22 controls change-over springs 17, the receive circuit being transferred from the loudspeaker to the watch receiver. In a modification in which the recess is a horizontal portion of the casing, the spring clip and plunger are integral, the change-over contacts then being gravityoperated.
GB220746A 1946-01-23 1946-01-23 Improvements in or relating to telephone instruments Expired GB606997A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB220746A GB606997A (en) 1946-01-23 1946-01-23 Improvements in or relating to telephone instruments

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB220746A GB606997A (en) 1946-01-23 1946-01-23 Improvements in or relating to telephone instruments

Publications (1)

Publication Number Publication Date
GB606997A true GB606997A (en) 1948-08-24

Family

ID=9735476

Family Applications (1)

Application Number Title Priority Date Filing Date
GB220746A Expired GB606997A (en) 1946-01-23 1946-01-23 Improvements in or relating to telephone instruments

Country Status (1)

Country Link
GB (1) GB606997A (en)

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